I found a solution,
For future use, when you find a solucion, share it instead to delete your question, this can help to others too.
Original question was: How to use 2 columns in forms.
Possible solutions without more data from the poster:
You can use two blocks, at 50%, one side other, and you will have a 2 columns form.
alright giu, I’ll keep that in mind. I used blocks and now I’m trying to set tab index…thanks for the answer.